BeagleBone Black Serial Port
The BeagleBone® Black serial port provides low speed +3.3V TTL RS-232 data communication
with a wide variety of devices, such as sensors, displays, ADCs, and DACs. There are
four serial port UARTs (/dev/ttyO1
, /dev/ttyO2
,
/dev/ttyO4
, and /dev/ttyO5
), each of which
connects to a receiver (RX
) and transmitter (TX
)
pin.
For more information, see:
Do not connect the BeagleBone Black serial port to 12V RS-232 serial ports, which are found on many older computers.